More than 420 measles cases have been confirmed across Texas as of Tuesday, according to state health officials, as an outbreak of the highly contagious illness continues spreading in several states, including Colorado, which earlier reported its first case in years.

Measles cases in Texas and New Mexico rose to 370 on Friday, the health departments of the states said, an increase of 19 infections since their previous reports four days ago, as the United States deals with one of the largest measles outbreaks in the past decade.

The Texas public health department is now reporting a total of 422 measles cases in the ongoing outbreak that began in Gaines County. The outbreak has now spread to two additional counties, both in the center of the state.

The measles outbreak in western Texas is continuing to grow with a total of 422, according to new data published Tuesday.

WHEN VACCINATION RATES ARE HIGH, WE PROTECT According to the health department, most of the cases in New Mexico involve unvaccinated residents. Officials add the measles outbreak is not a rapidly ...

Measles cases in Texas rose to 400 as the U.S. total reached almost 500 amid the worsening outbreak, officials have said.

The measles outbreak in Texas and New Mexico has grown to include nearly 450 cases in just 2 months, health officials reported.Meanwhile, health departments in two other states are investigating cases for a potential link to the outbreak.

The measles outbreaks in West Texas and New Mexico have surpassed a combined 370 cases, and two unvaccinated people have died from measles-related causes.